Question

In: Chemistry

mathematically and conceptually, describe how enthalpy and entropy a re competing forces

Expert Solution

Enthalpy (H) is related to the amount of energy that is lost or gained by a system during a normal chemical process.

Entropy (S) can be thought of as the force in the universe that pushes everything toward disorder and chaos. The second law of thermodynamics states: In any spontaneous process there is always an increase in the entropy of the universe.

Where = change in entropy

= change in enthalphy

T = Temperature in kelvin.

Enthalpy (H)

Positive (+) Heat absorbed

Negative (-) Heat released

Entorpy (H)

Positive (+) Increase in disorder

Negative (-) Decrease in disorder

ΔH (enthalpy change) and ΔS (entropy change of a reaction) fit together with G to explain the behaviour of a chemical reaction. Consider the thermodynamic equation:

ΔG = ΔH - TΔS

(Maximum usable (Heat (Energy gained or lost due to

potential energy energy) changes in thermal and positional

of a reaction) disorder of molecules)

For a given G, if H increases then S decreases and vice-versa.

queen_honey_blossom answered 2 years ago

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